/*
 * MIT License
 *
 * Copyright (c) 2020 wen.gu <454727014@qq.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/***************************************************************************
 * Name: xmessage_parser.h
 *
 * Purpose: a parser to parse xmessage from data buffer
 *
 * Developer:
 *   wen.gu , 2023-11-01
 *
 * TODO:
 *
 ***************************************************************************/

#ifndef __XBUS_COM_INTERNAL_XMESSAGE_PARSER_H__
#define __XBUS_COM_INTERNAL_XMESSAGE_PARSER_H__

#include <cstdint>
#include <memory>
#include <functional>

#include "xbus/core/xtype.h"
#include "xbus/core/xerror.h"
#include "xbus/com/xmessage.h"


namespace xbus::com::internal {


class XMessageParser final {
public:
    using XErrC = core::XErrC;
    using ErrorHandler = std::function<void(XErrC err)>;
    using XMessageParserPtr = std::shared_ptr<XMessageParser>;
public:
    XMessageParser(uint32_t max_pkg_size, ErrorHandler&& error_handler = nullptr);
    ~XMessageParser();

public:
    XMessageSp parse(uint8_t* & pdata, uint8_t* pend);

protected:
    void reportError(XErrC err);
    bool appendData(const uint8_t* data, uint32_t size);
    void reset();
    XMessageSp makeMessage();
private:
    uint32_t last_pkg_idx_ = XMSG_PKT_IDX_INVALID;
    uint32_t total_pkg_ = 0;
    uint32_t max_pkg_size_ = 0;
    uint32_t recv_pos_ = 0;
    uint32_t total_size_ = 0;
    uint8_t* msg_data_ = nullptr;
    XMessageSp msg_ptr_ = nullptr;
    ErrorHandler error_handler_;

};

} //namespace xbus::com::internal



#endif /** !__XBUS_COM_INTERNAL_XMESSAGE_PARSER_H__ */